There are currently 2 observation decks. One at each terminal. The old and definetly the best one on the old T1 is closed but you can take pretty decent shots from the 2 new teraces as well. Opening hours are stated on HAM's website. The T1 terace is free of charge, for acces to the T2 terace you need to eat something at the connected restaurant.

But there are far better spots around the airport, so if you've got more time then just an hour or 2 between 2 flights you should consider to visit one of these.

A very good website for spotting in HAM is Frank's www.fuairliner.de where you will find a pretty good list of spotting points @ HAM. Nevertheless things have changed in the past. Spotting point #2 isn't available any more, and point 3 "T4" is now known as T2.

Quoting Dba4U (Reply 1):There are currently 2 observation decks. One at each terminal. The old and definetly the best one on the old T1 is closed but you can take pretty decent shots from the 2 new teraces as well. Opening hours are stated on HAM's website. The T1 terace is free of charge, for acces to the T2 terace you need to eat something at the connected restaurant.

Thanks for the information, but I'm a little confused! You say the T1 deck is closed but then say it's free of charge. You also say two new terraces - are both of these located in T2?

Quoting Dba4U (Reply 3):So we've got 2 terminals, T1 and T2 which both have visitor decks. T1 free of charge, T2 connected to a restaurant. They're both pretty good but the light can be tricky during the day.